CVE-2025-41743Public exploit

Firmware information disclosure via XOR and static password

Published Dec 2, 2025 · Updated Dec 2, 2025

Inadequate encryption in Sprecher Automation SPRECON-E firmware before 9.0 allows local users to read firmware image contents. Update files use an XOR transformation and a static password, allowing the bundled fwimaker decoder to convert an encrypted FWI image into a decryptable ZIP archive. Access to a firmware update file is required; signature verification still prevents modified firmware from being accepted.

CVSS severity4.0
Medium
EPSS probability0.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Inadequate encryption in Sprecher Automation SPRECON-E firmware before 9.0 allows local users to read firmware image contents. Update files use an XOR transformation and a static password, allowing the bundled fwimaker decoder to convert an encrypted FWI image into a decryptable ZIP archive. Access to a firmware update file is required; signature verification still prevents modified firmware from being accepted.

The record

CVE
CVE-2025-41743
Published
Dec 2, 2025
Updated
Dec 2, 2025
Vendor
Sprecher Automation
Product
SPRECON-E-P
Classifications
CWE-326, T1140
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0 <9.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Sprecher Automation · SPRECON-E-Pversion=1.0 <9.0
Sprecher Automation · SPRECON-E-T3version=1.0 <9.0
Sprecher Automation · SPRECON-E-Cversion=1.0 <9.0

Published CVSS scores

3.3Sprecher AutomationCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0CERT@VDECVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0Sprecher AutomationCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-326Inadequate Encryption Strength
T1140Deobfuscate/Decode Files or Information

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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